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this seems v interesting  You can now read the first multi-center clinical study conducted in several Latin American countries demonstrating very clearly that Chlorine Dioxide is a fully effective treatment for COVID-19.
 
This is the very first Chlorine Dioxide scientific study carried out on human beings for therapeutical purposes.
 
This exceptional study has been registered and accepted in clinicaltrials.gov on April 7, 2020 (NCT 04343742) and falls within the studies categorized as ECE (quasi-experimental pilot studies) by the NCBI (National Center for Biotechnology Information).

Link?
 

sorry its taken so long to reply but have been incapacitated. i read it on andreas kalker site. if the trials are true then hopefully mark grenon and sons will be cleared of any charges. i hope they are well as i havnt been able to find any updates. 
Chlorine dioxide is approved by law in Bolivia In Bolivia, Law No. 1351 of 2020 was approved that authorized the preparation, commercialization, supply and use under consent of the CDS chlorine dioxide solution, as prevention and treatment in the face of the COVID-19 pandemic. An ethics committee was legally constituted endorsed by the Bolivian Ministry of Health, which approved this multicenter, retrospective, international research protocol, made up of five universities (Technical University of Oruro, Public University of El Alto, Greater University of San Simón , Universidad Autónoma Gabriel René Moreno and the Technical Institute of Yacuiba "Gran Chaco") which in turn, through their clinical, scientific and ethical research committees, are conducting their own research on chlorine dioxide for use in different Applications.
Statistics from Bolivia show a marked reduction in cases and deaths in that country. For example, from a peak of 2031 daily cases on August 20, 2020, cases dropped to 147 daily cases on October 21, 2020, representing a 93% decrease.